quilt: Disable external sendmail for deterministic build
Otherwise, the build results would be different w/o host's /usr/sbin/sendmail:
1) The /usr/share/quilt/compat/sendmail will be genrated if no
/usr/sbin/sendmail on host
2) No /usr/share/quilt/compat/sendmail if host's has /usr/sbin/sendmail
Use --without-sendmail to make it always generate /usr/share/quilt/compat/sendmail.
Signed-off-by: Robert Yang <liezhi.yang@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
